2,6-Dimethylphenol
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This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition
Issued and maintained by the United States Pharmacopeial Convention (USP)
(CH3)2C6H3OH 122.16 CAS RN®: 576-26-1.—White to pale yellow, crystalline solid.
Assay: Inject a 1 in 3 solution of it in xylene into a suitable gas chromatograph equipped with a flame-ionization detector, helium being used as the carrier gas at a flow rate of about 40 mL per minute. The following conditions have been found suitable: a 3.2-mm × 1.83-m stainless steel column packed with 10% phase G25 on support S1A; the injection port temperature is maintained at about 250° and the detector temperature at about 310°; the column temperature is programmed to rise at 8° per minute from 100° to 200°. Similarly inject a specimen of xylene. The area of the C8H10O peak is not less than 98% of the total peak area corrected for xylene.
Melting Range〈741〉: between 44° and 46°.
